When a taliban is sexing up his lady in afghanistan, and getting all crazy and dirty, and an American laser guided missle explodes exactly on the back of his head, the resulting mess all over the girl is called a 'dirty taliban.'

Najibullah: Ohmygod I love having religiously appropriate doggy style sex with you

Farishta: yes yes yes yes yes

Najibullah: We will have many babies to fight against the accursed unbelieving crusaders...

WHOOSHING SOUND FOLLOWED BY GIGANTIC EXPLOSION

Farishta: Great. Thirty minutes of screwing and all I get is a Dirty Taliban.